1Function and Use: With this stepped ring sizing mandrel, you can easily know your finger size and help you make the right ring. Perfect for professionals and beginners. 2Multi Purpose: This plastic ring stick is suitable for measuring, forming, sizing, wrapping, holding, shaping rings, and gold or silver jewelry repairing work, testing, etc. 3Knurled Handle: This ring sizer is designed with a knurled handle for a secure and comfortable grip, allowing for better control and ease of use during jewelry making processes. 40.56 to 0.84in Diameter: This finger sizing stick can be used to adjust and repair deformed rings. Diameters from 14.4mm to 21.5mm (0.56 in to 0.84 in), suitable for rings of different sizes. 5Durable Material: This ring mandrel for ring making is made of premium plastic and nylon material, the sturdy construction ensures durability, making it a reliable addition to your jewelry making tools for consistent use over time.